WO2008007418A1 - Système et procédé de répétition de données - Google Patents

Système et procédé de répétition de données Download PDF

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Publication number
WO2008007418A1
WO2008007418A1 PCT/JP2006/313684 JP2006313684W WO2008007418A1 WO 2008007418 A1 WO2008007418 A1 WO 2008007418A1 JP 2006313684 W JP2006313684 W JP 2006313684W WO 2008007418 A1 WO2008007418 A1 WO 2008007418A1
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WO
WIPO (PCT)
Prior art keywords
relay
master
new
data
time
Prior art date
Application number
PCT/JP2006/313684
Other languages
English (en)
Japanese (ja)
Inventor
Kazuumi Koguchi
Hirotoshi Yamada
Kazunori Kotaka
Tsuyoshi Kobayashi
Original Assignee
Mitsubishi Electric Corporation
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mitsubishi Electric Corporation filed Critical Mitsubishi Electric Corporation
Priority to PCT/JP2006/313684 priority Critical patent/WO2008007418A1/fr
Priority to EP06768046A priority patent/EP2048822A4/fr
Priority to JP2008524688A priority patent/JP5238500B2/ja
Publication of WO2008007418A1 publication Critical patent/WO2008007418A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/02—Details
    • H04B3/36—Repeater circuits
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/54—Systems for transmission via power distribution lines
    • H04B3/58—Repeater circuits
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/24—Radio transmission systems, i.e. using radiation field for communication between two or more posts
    • H04B7/26—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile
    • H04B7/2603—Arrangements for wireless physical layer control
    • H04B7/2606—Arrangements for base station coverage control, e.g. by using relays in tunnels
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/24—Radio transmission systems, i.e. using radiation field for communication between two or more posts
    • H04B7/26—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile
    • H04B7/2643—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile using time-division multiple access [TDMA]
    • H04B7/2656—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile using time-division multiple access [TDMA] for structure of frame, burst
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H04L12/40—Bus networks
    • H04L12/403—Bus networks with centralised control, e.g. polling
    • H04L12/4035—Bus networks with centralised control, e.g. polling in which slots of a TDMA packet structure are assigned based on a contention resolution carried out at a master unit
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B2203/00—Indexing scheme relating to line transmission systems
    • H04B2203/54—Aspects of powerline communications not already covered by H04B3/54 and its subgroups
    • H04B2203/5462—Systems for power line communications
    • H04B2203/5479—Systems for power line communications using repeaters
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J3/00—Time-division multiplex systems
    • H04J3/02—Details
    • H04J3/06—Synchronising arrangements
    • H04J3/0635—Clock or time synchronisation in a network
    • H04J3/0638—Clock or time synchronisation among nodes; Internode synchronisation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H04L12/44—Star or tree networks

Definitions

  • the present invention relates to a data relay system and a data relay method for performing data relay between devices arranged at a long distance.
  • TDMA time division multiple access
  • Master master station
  • Slave slave stations
  • Access to media is time-dependent. It is characterized in that it is performed in proportion and that multiple slave devices can be accommodated efficiently.
  • TDMA is communication between a master device and a slave device.
  • the communication is performed over a long distance. Communication is possible.
  • the attenuation of the signal is much larger than that of optical fiber. Therefore, in order to perform desired communication between a master device and a slave device arranged at a long distance. Therefore, relay transmission of signals is essential.
  • Patent Document 1 a data relay method that prevents the occurrence of interference by intermittently performing communication between nodes.
  • Patent Document 1 Japanese Unexamined Patent Publication No. 2005-143046 (pages 4-6, Fig. 1)
  • Patent Document 1 the conventional techniques such as the above-mentioned Patent Document 1 are directly related to relay transmission. Only the data relay between the two devices is considered, and it is not directly related to the relay transmission, and the relay of the data held by other devices is completely considered! /,.
  • a plurality of new devices are used in the relay device.
  • the concept of a relay device as in the prior art cannot accommodate a new terminal in the relay device in the middle of the transmission section. There was a problem.
  • the present invention has been made in view of the above, and in a case where data relay transmission between devices arranged at a long distance is performed using a single frequency, the relay device in the middle of a transmission section is provided. Therefore, it is an object of the present invention to provide a data relay method and a data relay system that can accommodate new terminals and eliminate restrictions imposed on connection of relay devices.
  • a data relay system is connected to a master station device and the master station device in a time-division multiple access, and is issued from the master station device side. 1 to a plurality of relay devices that relay the received data and the data directed to the master station device side using a single frequency signal, and a slave station device that is connected to at least the relay device by time division multiple access
  • the relay apparatus operates as a master station of a slave station apparatus that is time-division multiple-accessed to itself.
  • time-division multiple access is made to the master station device, and the data transmitted from the master station device side and the directivity data to the master station device side are converted to a single frequency signal. Since the relay device to be used and relayed operates as a master station of the slave station device connected in time division multiple access, the relay device can accommodate a new terminal. In addition, for example, it can be applied only when relay devices are arranged in a line. There is an effect that conventional restrictions can be eliminated.
  • FIG. 1 is a diagram showing a connection configuration of a data relay system according to a first embodiment of the present invention.
  • FIG. 2 is a diagram showing a concept of a data relay method in the data relay system shown in FIG.
  • FIG. 3 is a time chart showing the operation timing of each device shown in FIG. 2.
  • FIG. 4 is a diagram showing a connection configuration of a data relay system and a concept of a data relay method in the system according to the third embodiment of the present invention.
  • FIG. 5 is a time chart showing the operation timing of each device shown in FIG. 4.
  • FIG. 6 is a diagram showing a connection configuration of a data relay system and a concept of a data relay method in the system according to the fourth embodiment of the present invention.
  • FIG. 7 is a time chart showing the operation timing of each device shown in FIG.
  • FIG. 8 is a diagram showing a connection configuration of a data relay system and a concept of a data relay method in the system according to the fifth embodiment of the present invention.
  • FIG. 9 is a time chart showing the operation timing of each device shown in FIG.
  • FIG. 10 is a table showing an operation timing at which each device performs a Master operation or a Slave operation within an operation cycle.
  • FIG. 11 is a sequence diagram showing a switching operation to a new operation table.
  • FIG. 12 is a diagram showing an example of configuration change (REP addition) in the data relay system of the present invention.
  • FIG. 13 is a sequence diagram showing an operation for switching to a new parameter when the system configuration is changed.
  • FIG. 14 is a diagram for explaining communication between devices not having a repeater.
  • FIG. 15 is a diagram for explaining relay transmission using a plurality of frequencies with a repeater interposed.
  • FIG. 16 is a diagram for explaining the problem of interference in relay transmission.
  • FIG. 17 is a diagram showing a concept in which a repeater accommodates a user terminal in a general home.
  • FIG. 18 is a diagram showing a configuration example in a case where a repeater that accommodates a user terminal in a general home is also connected in a branching manner with a master station power.
  • the distance between the device 101 and the device 102 is too long, communication data cannot be transmitted only by these devices. Accordingly, as shown in FIG. 15, several repeaters (in the example shown, repeaters 103 to 105) are interposed between the devices 101 and 102, and between the devices and the repeaters or repeaters. In order to prevent the interference of communications performed in, relay transmission using different frequencies is performed.
  • the repeater 103 transmits to the device 101 at the frequency A, the signal reaches in the reverse direction. That is, the transmission signal of the repeater 103 arrives at a level that affects as noise at the position of the repeater 105. If the repeater 105 tries to receive the signal from the device 102 at this time, the signal from the device 102 interferes with the signal from the repeater 103 and cannot be normally received.
  • the conventional technology only considers relaying communication data between two devices 101 and 102 as shown in FIG. 15, and communication between other devices not directly related to relay transmission. It is not supposed to relay data. Therefore, the conventional technology cannot adopt the connection form as shown in FIG.
  • FIG. 1 is a diagram showing a connection configuration of the data relay system according to the first exemplary embodiment of the present invention.
  • Figure 2 shows an overview of the data relay method in the data relay system shown in Figure 1. It is a figure which shows just in case.
  • the data relay system useful for this embodiment includes a master device (hereinafter referred to as “Master”), a repeater device (hereinafter referred to as “REP”), and a slave device (hereinafter referred to as “Slave”). Notation).
  • MasterlO is a master station device in TDMA
  • Slavell and 12 are slave station devices connected to MasterlO.
  • REP 20 and 30 are intermediate devices in TDMA
  • Slave 21, 22, 31 to 33 are slave station devices connected to each REP.
  • the number of slaves up to the number of slaves that can be accommodated in TDMA is set as 2 slaves per master and 2 or 3 per REP. . Also, even if the number of connected units increases, the operation described below will not be changed.
  • All devices in Figure 2 shall operate at a single frequency F1. In order to avoid the occurrence of interference, all devices shall operate every 3 frame times in TDMA. These three frames (time) are expressed as time 1, time 2, and time 3, respectively.
  • FIG. 3 is a time chart showing the operation timing of each device shown in FIG.
  • Master operation is used to indicate the operation when functioning as a Master device
  • Slave operation is the operation when functioning as a Slave device. use.
  • the operation time is time-divided for each set of MasterZSlave in TDMA, so that when a single frequency is used. Even if they do, they will not interfere with each other.
  • each Master and Slave may perform normal Master operation or Slave operation in TDMA, but may suspend operation except for the time when the own device operates. Therefore, no special additional functions are required.
  • REP is a force that needs to perform both the Slave operation and the Master operation.
  • the REP needs to perform only one operation, the Slave operation for a certain time and the Master operation for a certain time.
  • the REP only has to transmit the data to the lower devices (lower slave and Z or lower REP) when performing the master operation, and hold the data received from the lower devices. On the other hand, it is only necessary to hold the received data and transmit the data to the higher-level device while performing slave operation. REP can relay data in both directions based on these processes.
  • the operation cycle is the total number of Master and REP.
  • each device can operate as follows.
  • Master starts Master operation at any timing when it starts up. After that, it operates as a Master at the “operation cycle” interval set as a parameter. The operation is paused except for the time it operates as the master (refer to the Master (lO) column in Fig. 3). Since the master according to the present embodiment is a TDMA master, a signal indicating the beginning of the frame (hereinafter referred to as “Beacon”) is inserted at the beginning of the frame and transmitted. Also, the MAC address of its own device shall be inserted into the beacon.
  • Beacon a signal indicating the beginning of the frame
  • Slave searches for a beacon that includes a MAC address that matches the “Master MAC address” held by itself.
  • a desired beacon When a desired beacon can be received, it operates as a slave at the frame time when the beacon is received, and thereafter operates as a slave at an “operation cycle” interval. The operation is suspended during other times (see the Slave column in Fig. 3).
  • REP can search for a beacon and confirm the desired beacon (the MAC address included in the beacon matches the “Master MAC address” it owns). Then, the operation starts as a slave at the “operation cycle” interval. Then, the master operates in the next frame time that operates as a slave. When performing a Master operation, send the MAC address of the local device in the beacon (see the REP column in Fig. 3).
  • each device can determine autonomously by itself, it does not cause interference. Can do.
  • a new terminal can be accommodated in REP that relays and transmits using a single-frequency signal. Furthermore, for example, when REPs are in a row, force cannot be applied.
  • the Master MAC address is included in the computer in advance for identifying the beacon.
  • a plurality of types of beacons are defined in advance, and instead of the Master MAC address.
  • the beacon number may be set to Master, Slave, and REP, Master will send a beacon with the set number, and Slave and REP may be replaced by exploring the beacon with the set number during Slave operation. . In this way, it is not necessary to send the MAC address in the beacon.
  • the operation cycle is set in advance in each device as a parameter.
  • the operation cycle information may be included in the beacon transmitted by the Master.
  • the Slave and REP can recognize the operation cycle by extracting the MAC address and operation cycle of the Master from the beacon.
  • REP if REP itself performs Master operation, it should send a beacon including the received operation period.
  • an apparatus that operates as a master transmits a beacon that includes an operation period, so that it is only necessary to set the operation period parameter to only Master. .
  • FIG. 4 is a diagram showing the connection configuration of the data relay system and the concept of the data relay method in the system according to the third embodiment of the present invention.
  • the data relay system shown in the figure has two REP (2 0, 50) are connected, and the REP is arranged in parallel.
  • FIG. 5 is a time chart showing the operation timing of each device shown in FIG. It is assumed that all devices in FIG. 4 operate at a single frequency F 1 as in the first embodiment, and parameters for the operation period are set in each device.
  • the concept of the operation cycle in the present embodiment is the same as that in the first embodiment. Specifically, “6”, which is the total number of masters and REPs, is set.
  • REP40 performs Master operation
  • Slave41 and 42 perform Slave operation.
  • REP50 performs Master operation, and Slave51, 52 and REP60 force label operation are performed.
  • REP60 performs Master operation, and Slave61 and 62 perform Slave operation.
  • device type and operation cycle parameters are set for all three types of devices, Master, Slave, and REP.
  • a “switching delay” t ⁇ ⁇ parameter is set.
  • This switching delay is the frame time from REP as a slave to force master.
  • REP20, 30, 40, and 60 perform master operation immediately after slave operation, so the switching delay is zero.
  • Master and Slave execute either Master operation or Slave operation once every operation cycle at the operation cycle interval.
  • the slave operation timing in the REP operates at an “operation cycle” interval from the frame time when a desired beacon is received, as in the first embodiment.
  • the master operation is performed after the frame time determined based on the “switching delay” from the frame time of the slave operation.
  • the switching delay is obtained by the following formula.
  • the parameters of the device type, the operation cycle, the MAC address, and the switching delay are set in each device having a normal TDMA operation mechanism. Even when there is a relay device branch in the network configuration, the operation time of the master operation, slave operation, and sleep operation can be determined independently by each device itself, and the occurrence of interference is suppressed. Data relay using TDMA can be realized.
  • the operation period and switching delay parameters may be included in the beacon transmitted by the force Master set in advance in each apparatus with the operation period and switching delay parameters.
  • FIG. 6 is a diagram showing the connection configuration of the data relay system according to the fourth embodiment of the present invention and the concept of the data relay method in the system.
  • the data relay system shown in FIG. 4 has the same configuration (topology) as that of the second embodiment shown in FIG. 4, but REP20 that accommodates REP30, Slave21, and 22 and REP60 that accommodates Slave61 and 62. Assume that and are placed apart from each other by more than a distance that does not cause interference. In addition, it is assumed that the REP 50 that accommodates the REP 60 and the Slaves 51 and 52 and the REP 40 that accommodates the Slave 41 and 42 are arranged apart from each other by a distance that does not cause interference.
  • FIG. 7 is a time chart showing the operation timing of each device shown in FIG. It is assumed that all devices in FIG. 6 operate at a single frequency F 1 as in the first embodiment, and parameters for the operation period are set in each device.
  • the operation cycle in this embodiment is set to “4” instead of “6”, which is the total number of masters and REPs! [0060] In FIG.
  • REP20 performs Master operation
  • Slave21, 22 and REP30 force label operation
  • REP60 performs Master operation
  • Slave61 and 62 perform Slave operation.
  • REP40 performs Master operation
  • Slave41 and 42 perform Slave operation
  • REP50 performs Master operation
  • Slave51, 52 and REP60 perform Slave operation.
  • the switching delay in REP is determined as follows.
  • the configuration shown in FIG. 6 shows an example in which there is a combination of REPs that do not cause interference even when operated at the same time. It can be reduced from the total number of Masters and REPs. As a result, even with the same configuration (topology) as in the third embodiment, the operation cycle can be made shorter than in the third embodiment, and the delay time when data is relayed can be shortened.
  • the operation time of the master operation, slave operation, and sleep operation can be determined autonomously by each device itself, and TDMA that suppresses the occurrence of interference Data relay by can be realized.
  • the operation cycle should be shorter than in the case of Embodiment 3. Thus, the delay time can be shortened.
  • FIG. 8 is a diagram showing the connection configuration of the data relay system and the concept of the data relay method in the system according to the fifth embodiment of the present invention.
  • this embodiment provides a data relay method when a device that performs two or more master operations or slave operations is included. Note that this method makes it possible to increase the operation frequency of slaves with many slaves accommodated, for example, or slaves that want to achieve high throughput.
  • FIG. 9 is a time chart showing the operation timing of each device shown in FIG. It is assumed that all devices in FIG. 8 operate at a single frequency F 1 as in the first embodiment, and parameters for the operation period are set in each device. On the other hand, the operation cycle in the present embodiment is set to “8” unlike the first and second embodiments or the third embodiment.
  • REP40 performs Master operation and Slave41 performs Slave operation.
  • REP20 performs Master operation
  • Slave21 ⁇ 25 and REP30 perform Slave operation.
  • REP30 performs Master operation and Slave31-33 force lave operation.
  • REP20 performs Master operation
  • Slave21 ⁇ 25 and REP30 perform Slave operation.
  • the operation cycle of the present embodiment is “8”, which is set to a value larger than the total number of masters and REPs. For this reason, MasterlO performs two Master operations within one operation cycle, REP20 performs three Master operations within one operation cycle, and REP 30 performs two Master operations within one operation cycle.
  • the REP40 executes one Master operation within one operation cycle.
  • FIG. 10 is a table showing the operation timing at which each device performs the Master operation or the Slave operation within the operation cycle.
  • each device has data corresponding to one row in the table shown in FIG.
  • MasterlO maintains a table with “M1” in frame time 1 and “M” in frame time 7, and REP20 has “S” in frame times 1 and 7, “M 1” in frame time 2. It holds a table with an "M” at frame times 5 and 8.
  • “M” indicates a relative time for performing a Master operation
  • “S” indicates a relative time for performing a Slave operation.
  • “M1” is the first Ma for Master operation multiple times within the operation cycle. This indicates that the operation is ster.
  • the numerical value of the frame time shown here is “relative time” unlike the “time” described in FIG. Therefore, "Frame time 1" By the way, the slave operation is always performed except for the master.
  • the Master and REP transmit a beacon indicating the start of the frame time at the beginning of the frame time in the frame time written as “M” or “M1” in the operation table.
  • the beacon is sent with its own MAC address.
  • information indicating that it is “M 1” (1 bit is acceptable) is inserted and transmitted.
  • Slavel l, 12 monitors the beacon and searches for a beacon until it can receive a beacon that matches the MAC address of the master and that is written as “M1”.
  • the frame time is recognized as frame time 1 and the slave operation is performed. After that, it operates according to the operation table. In this example, slave operation is performed even at frame time 7.
  • the REP 20 monitors the beacon and searches for a beacon until it can receive a beacon that matches the Master's MAC address and that is written "M1".
  • the frame time is recognized as frame time 1 and the slave operation is performed. After that, it operates according to the operation table.
  • the master operation of “M1” is performed at frame time 2 (that is, the first master operation in the case of multiple master operations), master operation at frame times 5 and 8, and slave operation at frame time 7. I do.
  • the REP 30 monitors the beacon and searches for a beacon until it can receive a beacon that matches the Master's MAC address and that is written "M1".
  • the frame time is recognized as frame time 1 and the slave operation is performed. Thereafter, the operation test It operates according to one bull.
  • “M1” master operation is performed at frame time 2 !, master operation at frame time 5, and slave operation at frame times 4 and 7.
  • the upper master REP20 recognizes the time for “M1” operation as frame time 1, the frame time in the operation table shown in FIG. 10 and the time shown in FIG. It does not match. Specifically, Figure 10 is shifted to the left by one frame time.
  • the operation table is initially set for each device (one row in Fig. 10).
  • the table of all rows in Fig. 10 is set in the force MasterlO, and the operation tape is set in the other devices. You can refer to the line of the operation table by the device itself without initial setting! You may set only this information.
  • the subordinate REP performs only the slave operation until the operation table is available (because the master operation timing cannot be recognized until the operation table is obtained. (Recognized by exploring included beacons).
  • the operation table may be obtained by application layer communication as a method of transmitting the operation table. In this case as well, only the Slave operation needs to be performed until the operation table is obtained.
  • the switching timing is the timing when the last frame time of the operation cycle ends.
  • the new operation table may be notified by being included in a beacon by a device that operates as a master, or may be notified by communication in the application layer. Note that the timing for switching to the new operation table needs to be switched in frame time units, so in the notification process using the application layer, it becomes difficult to perform the simultaneous switching process for all devices as the network size increases. There is. In such a case, it is preferable to notify the switching timing information using a beacon.
  • FIG. 11 is a sequence diagram showing the switching operation to the new operation table.
  • step S 10 information on the new operation table is notified from MasterlO to a lower-level device.
  • This notification is performed according to the operation timing chart of FIG. 9 determined based on the current operation table shown in FIG. Specifically, MasterlO forces Slavel l, 12 and REP20, 40 (Sequence SQ101: Time 1), REP20 to Slave21 to 25 and REP30 (Sequence SQ102: Time 2), REP30 to Slave31 to 33 (Sequence SQ10 3: Time IJ3), REP40 force et al. Slave41 (Sigens SQ104: Toki IJ4), REP20 force et al.
  • the new operation table is notified to all devices. This notification may take some time. Until the new action table information is notified, the operation table that is currently used! [0086] It is assumed that the new operation table has been notified to all devices after elapse of time n times the operation cycle (n is a natural number) (step S15). X n) Frame.
  • FIG. 13 is a sequence diagram showing the switching operation to the new parameter.
  • the newly added REP 40 is first operated as a slave of REP 30. More specifically, a beacon including a MAC address of a desired master is searched, and when a beacon is found, a slave operation is started at the frame time at that time (step S51). If the beacon contains information about the operation cycle as in the second embodiment, the operation cycle can be recognized by searching for a beacon, and the slave operation can be performed in the operation cycle. Repeated.
  • REP40 notifies REP30, which is the upper master, that it is REP! / (Notification of entry) (sequence SQ501).
  • REP30 understands that the added device is a REP, it needs to give an operation cycle in which the REP operates as a master, so it notifies the upper master REP20 that a new REP40 has been added. (Sequence SQ502).
  • REP20 notifies MasterlO that a new REP40 has been added (sequence SQ503).
  • Step S52 MasterlO recognizes that REP40 has been added and calculates a new parameter ( Step S52). At this time, if it is connected in series, it is only necessary to notify only the operation cycle, but if it is connected in a branch, it is also necessary to notify the parameters of the operation cycle and switching delay (pause time). There is. In this example, the case where they are connected in series is shown as an example. Therefore, the switching delays of REP are all 0, and only the operation period needs to be calculated.
  • the new parameter (operation cycle) calculated by MasterlO is notified from MasterlO to the lower device (REP ⁇ Slave) (sequences SQ504 to SQ506). Since the existing device continues to operate with the old parameters, this notification may take time for the purpose of avoiding communication interruption of the existing device. For this reason, communication may be performed using the application layer, or a new parameter may be included in the beacon and notified. However, notification in the application layer is a one-to-one communication, so it is necessary to notify each subordinate device individually. When notifying by a beacon, it is broadcast to the subordinate equipment, so it only needs to be sent once.
  • a new parameter receipt response is returned from the REP and Slave so that recovery is possible even if notification of the new parameter fails due to noise or the like (sequence).
  • SQ507 to SQ509 The device that performs the master operation sends a “new parameter notification” again if there is a subordinate device that cannot receive the “new parameter receipt response”.
  • each REP subtracts 1 from the switching timing value and notifies the subsequent stage (sequence SQ514, SQ515).
  • Slave41 and 42 under REP40 can receive the beacon including the MAC address of MasterlO after REP40 starts master operation, and can communicate with REP40. .
  • the operation when adding a device is a case of "operating with parameters of operation cycle and switching delay without using an operation table" as shown in the first to fifth embodiments.
  • the method of this embodiment can be applied even in the case of “operating with the operation table” as shown in the sixth and seventh embodiments.
  • the new operation table information should be notified to each device at the beacon or application layer as described above, and the switching timing information to the new operation table should be transferred using the beacon. .
  • the present invention is useful as a data relay system and a data relay method for performing data relay between devices arranged at a long distance using a single frequency.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
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  • Mobile Radio Communication Systems (AREA)
  • Radio Relay Systems (AREA)

Abstract

L'invention porte sur un nouveau dispositif terminal compatible avec un dispositif répétiteur d'une section de transmission alors qu'une fréquence unique sert à la répétition des données et aux transmissions entre dispositifs fortement distants, ce qui exclut les restrictions de connexions. L'invention porte également sur un système répétiteur de données comprenant: un dispositif maître (10), des dispositifs répétiteurs (REP) (20, 30) reliés en AMCR au dispositif maître (10) et répétant les données émises par le ou reçues du dispositif maître (10) au moyen d'un signal à fréquence unique (F1); des dispositifs asservis (21, 22, 31-33) reliés en AMCR aux dispositifs REP (20, 30). Les dispositifs REP jouant le rôle de dispositifs maîtres pour les dispositifs asservis (21, 22, 31-33) reliés en AMCR à eux-même.
PCT/JP2006/313684 2006-07-10 2006-07-10 Système et procédé de répétition de données WO2008007418A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
PCT/JP2006/313684 WO2008007418A1 (fr) 2006-07-10 2006-07-10 Système et procédé de répétition de données
EP06768046A EP2048822A4 (fr) 2006-07-10 2006-07-10 Système et procédé de répétition de données
JP2008524688A JP5238500B2 (ja) 2006-07-10 2006-07-10 データ中継システムおよびデータ中継方法

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2006/313684 WO2008007418A1 (fr) 2006-07-10 2006-07-10 Système et procédé de répétition de données

Publications (1)

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WO2008007418A1 true WO2008007418A1 (fr) 2008-01-17

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EP (1) EP2048822A4 (fr)
JP (1) JP5238500B2 (fr)
WO (1) WO2008007418A1 (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010041555A1 (fr) 2008-10-06 2010-04-15 三菱電機株式会社 Système de relais de données et procédé d'allocation de temps de fonctionnement
JP2011055179A (ja) * 2009-09-01 2011-03-17 Fujitsu Ltd 無線通信システム、無線通信方法、および無線通信システムにおいて使用される中継局
CN102187719A (zh) * 2008-10-28 2011-09-14 艾可慕株式会社 无线通信***、中继***、中继装置以及同步方法
CN102197692A (zh) * 2008-10-28 2011-09-21 艾可慕株式会社 中继***、中继装置以及同步方法
JP2011525781A (ja) * 2008-06-24 2011-09-22 エルジーシー ワイヤレス，インコーポレイティド Ｔｄｄシステムにおける切り換え方法及び装置
JP2014072791A (ja) * 2012-09-28 2014-04-21 Panasonic Corp 無線通信システム
JP2014519736A (ja) * 2011-07-27 2014-08-14 ゼットティーイー コーポレーション パーソナルネットワークのネットワーキング方法及び内部ゲートウェイ

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8626060B2 (en) * 2011-04-14 2014-01-07 Qualcomm, Incorporated Beacon signals for repeaters within a wireless communications system
US9231693B2 (en) * 2013-07-19 2016-01-05 Motorola Solutions, Inc. Full duplex individual call via linked single frequency repeaters
US9232522B2 (en) 2013-07-19 2016-01-05 Motorola Solutions, Inc. Full duplex direct mode individual and group calling using adjacent time slots in a TDMA system

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000286813A (ja) * 1999-03-31 2000-10-13 Nec Corp 時分割多方向多重通信システム及び時分割多方向多重通信システムの制御方法並びにその制御プログラムを記録した記録媒体
JP2001358797A (ja) * 2000-06-12 2001-12-26 Matsushita Electric Ind Co Ltd データ伝送方法およびデータ伝送システム
JP2005143046A (ja) 2003-11-10 2005-06-02 Sangaku Renkei Kiko Kyushu:Kk 無線マルチホップネットワークにおけるパケット伝送方法

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4639937A (en) * 1983-12-07 1987-01-27 Harris Corporation HF avalanche relay communication technique
US5265150A (en) * 1991-01-30 1993-11-23 At&T Bell Laboratories Automatically configuring wireless PBX system
JPH10257009A (ja) * 1997-03-10 1998-09-25 Oki Electric Ind Co Ltd 無線中継方法及び無線中継機
JP3914268B2 (ja) * 1997-05-08 2007-05-16 株式会社日立製作所 列車無線通信システム及びその無線送受信装置
GB0200237D0 (en) * 2002-01-07 2002-02-20 Imec Inter Uni Micro Electr Wireless cellular network architecture
FR2845541B1 (fr) * 2002-10-04 2005-09-30 Thales Sa Procede et dispositif de liaisons de donnees a tres haut debit
US7031658B2 (en) * 2003-03-07 2006-04-18 Harris Corporation System and method for single radio retransmission using a half duplex radio
WO2005067173A1 (fr) * 2003-12-30 2005-07-21 Nokia Corporation Systeme de communication reposant sur l'utilisation de stations de base relais a liaisons de donnees asymetriques
US7386036B2 (en) * 2003-12-31 2008-06-10 Spyder Navigations, L.L.C. Wireless multi-hop system with macroscopic multiplexing

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000286813A (ja) * 1999-03-31 2000-10-13 Nec Corp 時分割多方向多重通信システム及び時分割多方向多重通信システムの制御方法並びにその制御プログラムを記録した記録媒体
JP2001358797A (ja) * 2000-06-12 2001-12-26 Matsushita Electric Ind Co Ltd データ伝送方法およびデータ伝送システム
JP2005143046A (ja) 2003-11-10 2005-06-02 Sangaku Renkei Kiko Kyushu:Kk 無線マルチホップネットワークにおけるパケット伝送方法

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP2048822A4 *

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011525781A (ja) * 2008-06-24 2011-09-22 エルジーシー ワイヤレス，インコーポレイティド Ｔｄｄシステムにおける切り換え方法及び装置
CN102171953A (zh) * 2008-10-06 2011-08-31 三菱电机株式会社 数据中继***以及工作时刻分配方法
EP2339768A1 (fr) * 2008-10-06 2011-06-29 Mitsubishi Electric Corporation Système de relais de données et procédé d'allocation de temps de fonctionnement
WO2010041555A1 (fr) 2008-10-06 2010-04-15 三菱電機株式会社 Système de relais de données et procédé d'allocation de temps de fonctionnement
EP2339768A4 (fr) * 2008-10-06 2013-04-24 Mitsubishi Electric Corp Système de relais de données et procédé d'allocation de temps de fonctionnement
US8737285B2 (en) 2008-10-06 2014-05-27 Mitsubishi Electronic Corporation Data relay system and operating time allocating method
CN102171953B (zh) * 2008-10-06 2015-11-25 三菱电机株式会社 数据中继***以及工作时刻分配方法
CN102187719A (zh) * 2008-10-28 2011-09-14 艾可慕株式会社 无线通信***、中继***、中继装置以及同步方法
CN102197692A (zh) * 2008-10-28 2011-09-21 艾可慕株式会社 中继***、中继装置以及同步方法
US8897200B2 (en) 2008-10-28 2014-11-25 Icom Incorporated Relay system, relay device and synchronization method
US9166672B2 (en) 2008-10-28 2015-10-20 Icom Incorporated Wireless communication system, relay system, repeater devices and synchronization method
JP2011055179A (ja) * 2009-09-01 2011-03-17 Fujitsu Ltd 無線通信システム、無線通信方法、および無線通信システムにおいて使用される中継局
JP2014519736A (ja) * 2011-07-27 2014-08-14 ゼットティーイー コーポレーション パーソナルネットワークのネットワーキング方法及び内部ゲートウェイ
JP2014072791A (ja) * 2012-09-28 2014-04-21 Panasonic Corp 無線通信システム

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JP5238500B2 (ja) 2013-07-17
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JPWO2008007418A1 (ja) 2009-12-10

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